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Sagot :

Bonjour,

3a=5a-8

= 3a-5a= 5a-5a-8

= 3a-5a= -2

= -2a =-8

a=(-8)/ (-2)=4

Bonjour,

8 = 5a -3a

8= 2a

a= 8/2

a= 4

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